1. Pheochromocytoma in Queensland 1970-83;Hartley;Aust N Z J Surg,1985
2. Incidence of pheochromocytoma in South Galicia, Spain;Fernandez-Calvert;J Intern Med,1994
3. The incidence rate of pheochromocytoma and Conn’s syndrome in Denmark, 1977-1981;Anderson;J Hum Hypertens,1988
4. Pheochromocytoma in Sweden 1958-1981;Stestrom;Acta Med Scand,1986
5. Occurrence of pheochromocytoma in Rochester, Minnesota, 1950 through 1979;Beard;Mayo Clin Proc,1983